Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/mtvrkan/senior-dev-kit/bug-fixnpx skills add mtvrkan/senior-dev-kit --skill bug-fixgit clone --depth 1 https://github.com/mtvrkan/senior-dev-kitWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mtvrkan/senior-dev-kit/bug-fix)<a href="https://agentmods.dev/skills/mtvrkan/senior-dev-kit/bug-fix"><img src="https://agentmods.dev/badge/skills/mtvrkan/senior-dev-kit/bug-fix.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00031 | $0.00261 |
| Opus 5 | $0.00015 | $0.00130 |
| Sonnet 5 | $0.00006 | $0.00052 |
| Haiku 4.5 | $0.00003 | $0.00026 |
Grade A, and why
bug-fix scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
bug-fix
Read error → root cause → smallest fix → test → done.
- Read stack trace / error / failing test first. Open ONLY files in the stack trace or directly symptom-related.
- Fix the smallest responsible code path. Run targeted test — no test exists → add 1 regression test. Non-obvious fix → one-line comment explaining why.
- Escalate immediately: auth/session/token/payment → security-guard | DB corruption/schema/migration → db-guard.
Deep reference: agent_docs/error-handling-patterns.md — typed error hierarchies, boundary handling, retry/fallback patterns.
Output
ROOT: [what and where]
FIX: [file:line — what changed]
TEST: [command — ✓ | regression test added]
RISK: low | medium
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 4d ago First seen · 27 lines · 31 tokens per session scan A c8c223f4705c
bug-fix is a skill published in the GitHub repository mtvrkan/senior-dev-kit (5 stars, last pushed 4d ago), licensed MIT. It adds 31 tokens to every session and 261 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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